Vessels



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WJB. LEWIS. MAST, SPAR, &c., FOR SAILING VESSELS,

No. 534,398. Patented Feb'. 19, 1895 @wom/vbo@ l.' l l l ,la l. l

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UNITED STATES PATENT OFFICE.

WILLIAM E. LEWIS, OF NEWARK, NEW JERSEY.

MAST, sPAR,&c.,LFoR sAlLlNG-vEssELs.

SPECIFICATION forming part of Letters Patent No. 534,398, dated February19, 1895.

\ Application-ined September 22,1894. Serial'No. 523,811. (No model.)

To all whom, I5 may concern:

Be it known that I, WILLIAM E. LEwIs, a citizen of the United States,residing at Newark, in the county of Essex and State of New Jersey, haveinvented certain'new and useful Improvements in Masts,.Spars, &c., forSaill ing-Vessels; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertainsA the parts as hereinset forth and iinally.

pointed out in the claims. A

Referring to the accompanying drawings in which similar letters ofreference indicate corresponding parts in each of the iigures,

where they occur, Figure 1 represents a longitudinal sectional view of amast or spar embodying my improvement, taken through line of Fig. 2, andFig. 2 is a transverse section taken through line y, of Fig. 1.

In said drawings, A, designates the hollow wooden shell of a mast orspar, which is made in two longitudinal sections, secured togetherV bymeans of dowels, b, and suitable cement or glue, as will be understoodupon reference to the drawings. In the inside of the shell at each side,I arrange a steel plate, c. Said plates lie in recesses formed in onesection of the mast to receive them, and extend, practically, from oneend of the shell to the other and project inward, say from one inch totwo.

inches toward the center, according to the size of the mast or spar, andabut against -a plate, d, arranged transversely with respect to saidplates, c. Firmly fastened by suitable rivets to said plates, c, and toone another, are braces, e, arranged diagonally with respect to theshell and in opposite directions throughout the interior thereof, asplainly shown in the drawings.

It will be seen from the foregoing that the arrangement of the platesand braces, as described, must impart immense strength and rigidity tothe mast or spar, and at the same time materially lessen the weightthereof as compared with a mast or spar having a solid plate extendingentirely across the shell.

In some cases, especially in vessels where a jib is not used, Iintroduce in the mast an additional means of strength, to wit :a plate,f, arranged longitudinally and at right angles to the braces and securedthereto and to one section of the shell, as indicated in the draw gTheinvention is intended also to apply to booms, gas, yard arms, bowsprits,doc.

By this construction it will be practically impossible for a mast tobreak, as will be manifest. v

Having thus described the invention, what I claim as new, and wish tosecure by Letters Patent of the`United States, is

1. The improved mast or spar herein described in which is combined ahollow or tubular, wooden shell composed of two sections joined togetherlongitudinally, and having an inwardly projecting tongue or plate ateach side thereof, and a series of braces arranged diagonally withrespect to the mast or spar and firmly secured to said tongues or platesand to one another, as described and for the purposes set forth.

2. The improved mast or spar herein described in which is combined ahollow or tubular wooden shell composed of two sections joined togetherlongitudinally, and having an inwardly projecting tongue or plate ateach side thereof; a series of brac/es arranged diagonally with respectto the mast or spar and firmly secured to said tongues or plates and toone another; and a plate extending longitudinally through said mast orspar at right angles with said braces and connecting therewith and withone section of the shell, as described, and for the purposes set forth.

In testimony that I claim the foregoing I have hereunto set my hand this20th day of September, 1894.

WILLIAM E. LEWIS.

Witnesses:

OLIVER DRAKE, ROBERT SOLLBERGER.

